//-----------------------------------------------------------
// File and Version Information:
// $Id$
//
// Description:
//      Storage for Fopi PID information from TPC/CDC dE/dx
//      Contains a (normalized) RooAbsPdf 
//      Aware of its momentum range
//
//
// Environment:
//      Software developed for GEM-TPC detector in FOPI.
//
// Author List:
//      Felix Boehmer    TUM            (original author)
//
//
//-----------------------------------------------------------


#ifndef FOPIPIDPROB_HH
#define FOPIPIDPROB_HH

#include "TString.h"
#include "TObject.h"

#include "RooRealVar.h"


class TF1;
class RooAbsPdf;
class RooRealVar;

class FopiPidProb : public TObject {

 public:

  FopiPidProb();
  FopiPidProb(const FopiPidProb& other);
  
  //copies are created from pdf and var (the fitting variable used)
  FopiPidProb(double momLow, double momHigh, 
	      const TString& partType, const TString& detType,
	      const RooAbsPdf* pdf,
	      const TString& varName);  //name of the underlying RooRealVar
  virtual ~FopiPidProb();
  
  void setProb(const RooAbsPdf* pdf);
  void setPartType(const TString& type) {fPartType = type;}
  void setDetType(const TString& det) {fDetType = det;}
  void setMomRange(double momLow, double momHigh) {fLow=momLow;fHigh=momHigh;}
  
  const RooAbsPdf* getProbDens() const {return fPdf;}
  //const RooRealVar* getVar() const {return fVar;}
  TString getPartType() const {return fPartType;}
  TString getDetType() const {return fDetType;}
  TString getVarName() const {return fVarName;}
  
  void getMomRange(double& momLow, double& momHigh) const;
  double getMomLow() const {return fLow;}
  double getMomHigh() const {return fHigh;}
  
  //get a (normalized) likelihood between min and max 
  double getLikelihoodValue(double min, double max) const;

  //returns ROOT TF1 object. Caller takes ownership
  TF1* getTF1() const;  
  

 private:
  const RooAbsPdf* fPdf;     // mumps
  //const RooRealVar* fVar;    //
  TString fPartType; 
  TString fDetType; 
  TString fVarName;

  
  double fLow;
  double fHigh;
  
 public:
  ClassDef(FopiPidProb,2)

};

#endif